function Popup(filename, w, h){

	if(!w)	var w=800;
	if(!h)	var h=600;
	
	var _options = "toolbar=no,location=no,status=no,menubar=0,scrollbars=no,resizable=no,width="+w+", height="+h;
	var _name	= "popup";
	var _winName = window.open(filename,_name,_options);
	
	if(_winName.focus)
		_winName.focus();
		
	return false;
}